<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div><h>{{info}}</h></div>
<script src="vue.min.js"></script>
    <script>
        let v=new Vue({
            el:"div",
            data:{
                info:"哈哈哈"
            }
        })
        setTimeout(function (){
            v.info="值变了"
        },3000)
    </script>

</body>
</html>